the length of the tangent to a circle which is 13 cm distance from the centre of the circle is 12 cm find the radius of the circle
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the length of the tangent to a circle which is 13 cm.
distance from the centre of the circle is 12 cm.
radius =?
IN ΔABC.
AC²=AB²+BC²....(by using Pythagoras theorem )
13²=12²+BC²
BC²=169-144
BC²=25
BC =√25
.•. BC=5cm.
hence,
radius of the circle =5cm
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